Cylinder-wrench.



No. 685,282. l Patented Oct. 29, I90I. J. P. JOHNSON.

CYLINDER WRENCH.

Nn. 685,282. Patented oct. 29, lsol. J. P. JOHNSON. ,CYLINDER WRENCH. (Application mea Fab. 4, 1901.)

(No Model.) 2 Sheets-Sheet 2.

Ww 5f/M, 0MM www# UNITED STATES PATENT OFFICE.

JOHN P. JOHNSON, OF STORDEN, MINNESOTA.

CYLINDER-WRENCH.

SPECIFICATION forming part of Letters lPatent-N0. 685,282, dated October 29, 1901- Application nea February 4, 190i. sannita. 45,874. (No model T0 all whom/ Yit may concern:

Be it known that I, JOHN P. JOHNSON, a citizen of the United States, residing at Storden, inthe county of Cottonwood and State of Minnesota, have invented certain new and useful Improvements in Cylinder-Wrenches; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My present invention has for its object to provide an improved cylindenwrench of simpliied construction, reduced cost, and increased durability and strength.

To the aboveends the invention consists of the novel devices and combinations of devices hereinafter described, and defined in the claims.

The uses of a so-called cylinder-wrench are well understood by all persons familiar with threshing-machines. For the benefit of those who are not familiar with such mechanism it may be stated that the cylinderteeth are secured to the cylinder-bars by means of nuts screwed against the inner sides of the bars. The wrench must therefore engage the nut and at the same time clear and work between the bars and be able with a ratchet action both to tighten up and loosen the nuts. This has before been accomplished by the use of various pawland-ratchet de- Vices, which while doing the work in quite a satisfactory manner are quite liable to be broken or to get out of order, and, furthermore, are often unnecessarily expensive.

My improved wrench is illustrated in the accompanying drawings, wherein like characters indicate like parts throughout both views.

Figure 1 is a view in side elevation, show ing my improved wrench in operative position, a cylinder-bar, a tooth, and a nut being indicated by dotted lines g and Fig. 2 is a side elevation of the said wrench, some parts being sectioned andthe nut-socket being turned or reversed end for end with respect to Fig. 1.

In Fig. 1. the numeral 1 indicates one of the bars of a threshing-cylinder, the numeral ,2 indicates a cylinder-tooth, and the numeral 3 indicates a nut on the shank of the tooth 2 fory securing the same to the bar 1.

The character a indicates the crank-like wrench-stem, which is provided at its crank end with a hand-bar a.

The character l) indicates a heavy rachettoothed ring, which is provided both at its upper and lower faces with ratchet-teeth which extend in the same direction circumferentially thereof-that is, both series of teeth will drive in the one direction and slip in the other. The ratchet-ring b is provided with a heavy radially-projecting stem or stud b', which is swiveled in a suitable seat c2 at the free end of the crank a..

The character'findicates a nut-engaging socket or head suitably recessed to engage the nut, as indicated at f', and provided with a heavy axiallyprojecting stud f2, which works loosely through a central perforation in the ratchet-ring l). A similar nut-engaging socket or head f3, recessed to receive the nut, as shown at f4, is screwed onto the projecting end of the stud f2, as indicated atf. The sockets f and f3 are so spaced apart that there is considerable play between the same and the teeth of the ring b. On their inner faces the sockets fand f3, respectively, are provided with ratchet-teeth f5, f7, adapted to engage and cooperate with the adjacent ratchet-teeth of the said ratchet-ring b. It of course follows from what has been said respecting the teeth of the ratchet-ring b that the ratchet-teeth f6 and f7 are inclined in the same circumferential direction.

The operation, which is very simple, may be briefiy described as follows: The wrench is applied to the nut substantially as shown in Fig. 1, and when the `crank-stem a and handpiece a are vibrated backward and forward within the limits permitted by the bar ct the sockets f and f3 and the nut 3 will be moved in the direction indicated by the arrow in Fig. 1. In this position it will be noted that it is the socket marked f that engages the nut 3. To turn the nut in the opposite direction, the ratchet-ring b and parts carried thereby are viven a half-rotation on the axis of the stud I9 and the socket fa is engaged with the nut. Then under the oscillations of the crank-stem a the nut will, as is obvious, be turned in a direction reverse from that in dicated in Fig. 1, or in the direction indicated by the arrow marked on Fig. 2. It is further evident that with the ring t and parts car;

IOO

ried thereby projecting in a certain direction the soeketsf and f3 will be rotated in a certain determined direction regardless of which socket is acted upon by the ratchet-ring. The actions of the ratchet devices are reversed simply by turning the ratchet-ring so as to project the nut-socket in reverse directions.

The above device dispenses with all small partssuch as pawls, springs, ducreduces the number of parts, and provides parts all of which are very strong and durable. As the various parts may be drop-forged or cast, (preferably from steel,) the cost of the device is reduced approximately to the minimum consistent with eeiency.

It will of course be understood that the ring Z) being swiveled in the so-called crankstem d permits the sockets to be turned at various angles to said stem a for proper enlf ragement with the nuts. It will of course be understood that the Wrench may be put to a great many other uses than those indicated in the above description.

Vhat I claim, and desire to secure by Letters Patent of the United States, is as follows:

1. In a Wrench, the combination with a ratchetring having teeth on its opposite faces, of a double ended or headed socket member mounted for rotaryand axial movement with respect to said ratchet-ring, and provided with opposing ratchet-teeth for coperation With the ratchet-teeth of said ratchetring, substantially as described.

2. In a cylinder-wrench, the combinatie with a crank-stem and handpiece, of a doublefaced ratchet-ring swiveled to said crankstem, and a double-headed nut-socket having ratchet-teeth on its opposing portions and provided with a connecting stud or stem mounted in said ratchet-ring with freedom for rotary and axial movements, substantially as described. Y

3. In a cylinder-Wrench, the combination with a crank-stem and handpiece, of the double-faced ratchet-ring b having the stud or stem b swiveled in the end of said crank-stem, and the double-headed-socket member f,f3 having the connecting-stud f2 mounted in said ring b for rotary and axial movements, said heads f and f3 having respectively the ratchet-teeth f6 and f7, said parts operating substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

JOIIN P. JOHNSON.

\Vitnesses:

ANNE S. READ, F. D. MERCHANT. 

